Jon Rosenfield Profile picture
Scientist and best friend to my pitt-mix. working to defend SF Bay’s 💦 and native fishes. (Data “are”). RT's = “of interest”.
Nov 10, 2019 4 tweets 3 min read
“Ethics experts have questioned why Mr. Bernhardt was given approval to take part in the Endangered Species Act decisions on the delta smelt, since Westlands would be among the largest beneficiaries of the policy change”

nytimes.com/2019/11/09/cli… via @NYTimes “Four other former @Interior officials described the exchanges between Mr. Bernhardt and the ethics lawyer who reports to him as “extraordinary,” “atypical” & “intimidation.”

Via @CoralMDavenport
Oct 18, 2019 10 tweets 5 min read
Thing I’ve been hearing a lot recently: “Real Time Fish monitoring should dictate when the CVP & SWP export pumps are turned off to protect #endangeredspecies. See fish-pump off...no fish-pump on”.

There is *so* much wrong with this, it will require a #thread to unpack. 2a) Real time monitoring is not individual surveillance. Ecological monitoring will always miss individuals, esp. for rare species. (ie, we call it “sampling” & use statistics).

Monitoring will likely miss rare species & the early/late migrants that populations depend on.
Aug 31, 2019 10 tweets 17 min read
(Thread) A scientist’s view of the urgent need for @GavinNewsom to sign SB#1, written by @sentoniatkins.

Like every scientist concerned with preventing #extinction of #SFBay’s fish species, I want #endangeredspecies management to use only the best available science. 1/ @GavinNewsom @SenToniAtkins I supported then-Secretary @sallyjewell's call to review #endangeredspeciesact safeguards for the Bay’s imperiled fish species. Those reviews were necessary bc endangered fish continued to decline; Jewell wrote that she expected the review to lead to increased protections. 2/